Hinge



' H. L. HASKELL.

HINGE.

APPLICATION FILED AUG.9. 1918.

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HINGE.

APPLICATION FILED AUG.9. l9 l8.

1,309,730. Patented July 15, 1919.

y 2 SHEETS-SHEET 2. 5' 4 IIII3 WITNESSES; MLVENTOH k jzZ/zf/ 3 ATTOR/VEVS form apart UNITED STATES PATENT OFFICE.

HENRY L. HASKELL, OF LUDINGTON, MICHIGAN, ASSIGNOR TO HASKELITE MANUFAC-TUBING CORPORATION,

A CORPORATION OF NEW YORK.

HINGE.

Specification of Letters Patent.

Patented July 15, 1919.

Application filed August 9, 1918. Serial No. 249,076.

To all whom it may concern:

Be it known that I, HENRY L. HAsKnLn, a citizen of the United States,residing at Ludington, county of Mason, State of Michigan, have inventeda certain new and useful Improvement in Hinges, and declare thefollowing to be a full, clear, and exact description of the same, suchas will enable others skilled in the art to which it pertains to makeand use the same, reference being had to the accompanying drawings,which of this specification.

My invention has for its object to produce a strong simple hinge forconnecting together parts made of laminated wood veneer such as, forexample, airplane members.

A further object of my invention is to produce a simple and novel hingewhich will provide a substantially continuous unbroken surface on eachside of two connected members in the various relative angular positionswhich the members are adapted to assume.

The various features of novelty whereby my invention is characterizedwill hereinafter be pointed out with particularity in the claims; but,for a full understanding of my invention and of its objects andadvantages, reference may be had to the following detailed descriptiontaken in connection with the accompanying drawings, wherein:

Figure 1 is a top plan view of the tail of an airplane having the rudderand stabilizers attached by means of hinges embodying the presentinvention;

Fig 2 is a side elevation of the extreme rear end of the airplane tailshowing only the rudder and its hinge;

Fig. 3 is a section on an enlarged scale, on line 33 of Fig. 2;

Fig. 4 is a perspective view of a fragment of the rudder and a fragmentof the post or support to which the rudder is hinged, the rudder beingdisplaced a short distance from the support to show the construction ofthe hinge;

Fig. 5 is a transverse section through the hinge, on an enlarged scale,taken approximately on line 55 of Fig. 2;

Fig. 6 is a view similar to Fig. 5, showing the condition of the partswhen the rudder is swung toward one side; and

Fig. 7 is a view similar to Fig. 5, showingia modification.

starring to the drawings, 1 represents the extreme rear end of thefuselage of an airplane, 2 is the rudder, and 3, 3 are stabilizers; themembers 2 and 3 being hinged to swing about vertical and transverseaxes, respectively. Since the present invention has to do particularlywith the hinge, I shall describe it in detail only as constructed inconnection with one of the hinge members, namely the rudder.

The rudder may conveniently be made of a single piece of laminated woodveneer folded or bent upon itself and the free edges, as indicated at4-, being brought together and fastened to each other in any suitableway. The bend or fold in the sheet of veneer is so made as to form a.semicylindrical member of a diameter equal to the thickness that therudder is to have at its front end. The stationary supporting part of apost, 5, is also made of asheet of laminated wood veneer bent into aform which provides a vertical semi-cylindrical part of the samediameter as the semi-cylindrical part of the rudder but having itsconvex side directed rearwardly whereas the convex side of thesemi-cylindrical front edge of the rudder is directed forwardly. It willbe seen that by removing sections at intervals from the cylindrical partof the rudder and removing from the post sections registering with theunimpaired portions of the rudder, two sets of hinge knuckles areproduced which may be interlocked with each other and provided with asuitable pintle extending through the same. The hinge knuckles arepossibly best shown in Fig. 4: where the parts marked 6 are the knuckleson the rudder and the parts marked 7 are the cooperating knuckles on thesupporting member or post. The space within each hinge knuckle may befilled with a block as indicated at 8, provided with a small bore, 9,extending through the same for the reception of a pintlc, 10. Where thehinges are of considerable length it may be desirable to form the holes9 as the bottoms of slots, 11, cut through corresponding sides of theblocks, the slots being then partially closed by means of fillingpieces, 12. By this arrangement it is unnecessary to drill long holes.

If desired, the hinge pintle may be formed out of a metal tube, 14, ofthe same external diameter as the internal diameter of thesemi-cylindrical hinge knuckles, as indicated surface from the wood inFig. 7. Where this arrangement is employed the hinge knuckles maycontain blocks, 15, having semi-cylindrical seats, 16, which form withthe semi-cylindrical veneer full cylindrical bearings for the pintle.

If the sections that are removed to pro duce the hingle knuckles are cutin deeply enough to permit the rudder to swing freely in the usual way,there would at all times be passages or openings alongthe hinge on atleast one side and sometimes on both sides. This would interfere withthe free flow of air along the surfaces of the supporting member 5 tothe corresponding surfaces of the rudder. To avoid this I make theexcisions no deeper than one-half of the diameter of the hinge knucklesso that when the parts are assembled the free edges, 17, of each hingeleaf engage with the sides of the opposed knuckle members with whichthey register; the material of the leaves being preferably sharpeneddown to a feather edge as indicated at 18 so that there will be noabrupt shoulder or projections. This arrangement would prevent therudder from swinging and therefore I have cut slits a short distanceinto the hinge leaves at the ends of the knuckles, as indicated at 19,so

that the tapered edges, 17, are, in fact, carried upon the ends oftongues, 20, which will yield as the rudder is swung to one side or theother, as best shown in Fig. 6, and. thus maintain a continuous unbrokenfront to the rear at both sides of the joint between the rudder and thefuselage.

I desire to have it understood that my invention is not limited to theexact structural details illustrated anddescribed; that it is notlimited to the particular use described herein or even to an embodimentin which the double leaves of each hinge are continued or extended toform a double-walled part to' be supported or to form the support, andthat it is intended to include all forms and arrangements coming withinthe definitions of my invention constituting the appended claims. 7 r rI claim: 7

1. A hinge made of sheets of laminated wood veneer each folded so as toform two leaves connected by a semi-cylindrical member, sections of saidsemi-cylindrical members being removed to form a series of knucklesadapted to cooperate with each other, anda pintle extending through saidknuckles.

2. A hinge made'of sheets of laminated veneer each folded'so as to formtwo Copies of this patent inay be'obtained for hinge knuckles,

proximately in the corresponding leaves and containing the mately inher, and

five cents eac h, by Washington, I). 0.

' tween each pair of leaves and forming seats engagingthe pintle on atleast one side. hinge comprising two sheets of resilient material'ea'chfolded to form double leaves joined by a semi-cylindrical member,sections being removed from said semicylindrical members to formcooperating a pintlevextending through said knuckles, the free ends ofthe leaves formed by the removal of sections of each semi-cylindricalmember terminating apa plane at right angles to axis "of thesemi-cylindrical member, each leaf being slit for a short v distance atright angles to said free edges in proximity to the ends of thehingeknuckles.

4. A hinge made of two sheets of laminated wood veneer each folded so asto form two leaves joined by a semi-cylindrical member, eachsemi-cylindrical member having sections removed at intervals to formhinge knuckles, the excisions extending. approxia plane at right anglesto the corresponding leaves and containing the axis of thecorresponding.semi-cylindrical memeach leaf being slitted for a shortdistance at the endsof the knuckles so that the portions of each leaflying between adjacent knuckles are in the form of tongues each adaptedto rest upon an opposed knuckle or that part of the hinge leaf lying inthe vicinity of the knuckle depending upon the angular position of thehinge.

hinge comprising two leaves having cooperating hinge knuckles, thethickness of the leaves being substantially equal to the thickness ofthe knuckles, and each leaf'having yieldable elements overlying andclosing the gaps #between it and the knuckles on the the other leaf soas to provide the hinge with substantially smooth continuous surfaces onboth sides thereof.

6. A hinge'composed of two leaves having cooperating knuckles whosediameter is ap- In testimony whereof I sign this specification. y 'l 1HENRY'L. HASKELL.

addressing the Commissioner of ZBatents,

of the

